HomeMy WebLinkAboutFolder~------··------·--· -·-· -
FOR OF,j\'?J U.s.1) ONLY
P&Z CASE NO.: u I . :;ia()
DATE SUBMITTED: 18' 1 \0•b1
CITY rn= Co1.1.1:ci:. STATION
/'/,11111i11g &· Lir1«·!opu1,·111 Sl'n;Jro
(Check one) 0 Minor
($300.00)
FINAL PLAT APPLICATION
0 Amending
($300.00)
~ Final
($400.00)
0 Vacating
($400.00)
Is this plat in the ET J? 0 Yes ~No
0 Replat
($600.00)"
·includes public hearing fee
The following items must be submitted by an established filing deadline date for P&Z Commission consideration.
$4-oo MINIMUM SUBMITTAL REQUIREMENTS:
./ $30& $600 Filing Fee (see above) NOTE : Multiple Sheets -$55.00 per additional s heet{ff-i
__:::__ $100 Variance Request to Subdivision Regulations (if applicable) OJ
L $200 Development Permit Application Fee (if applicable)./htJ ~ $600.00 Infrastructure Inspection Fee (applicable if any p~~li~ infrastructure is being constructed~
1 Application completed in full. V 1
~Copy of original deed restrictions/covenants for replats (if applicable).
____L_ Fourteen (14) folded copies of plat. (A signed mylar original must be submitted after staff review)
___!{__ Paid tax certificates from City of College Station, Brazos County and College Station l.S .D
__::!___ A copy of the attached checklist with all items checked off or a brief explanation as to why they are not.
_L_ Two (2) copies of public infrastructure plans associated with this plat (if applicable). L Parkland Dedication requirement approved by the Parks & Recreation Board, please provide proof of
approval (if applicable). OV\ .file. V'lfh~ ci
Date of Preapplication Conference: ~ I, Z.Oclf:: .
NAME OF SUBDIVISION 5fri~ fr.e&k.6a.A.Jev\5 ~divi$J\ov1 I ?h~ 3
SPECIFIED LOCATION OF PROPOSED SUBDIVISION (Lot & Block)--------------
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary Contact for the Project):
Name wt:J,la_u..,, Ptu l ~ f5
Street Address ltlf1o Gt-~ Jxi'1f/ City {O((ege SfaJ·o~n __
State 1]'._ Zip Code=1J'lK E-Mail Address ______ _
Phone Number {aqo-1Z-SO Fax Number '2G:fo -let/(
PROPERTY OWNER'S INFORMATION (ALL owners must be identified. Please attach an additional sheet for multiple
owners): ,_f t.
Name ~jhtj (',ret.k C~ ])eK~enfl lfa.
Stceet Addce" ffiQ (Q..',~ JOO~£. City c, (I~ Sf"t;;Q.i. ___ _
State 1S£ Zip Code45: E-Mail Address -______ _
Phone Number Clio-7L50 Fa x Number 610 -rotf/
ARCHITECT OR ENGINEER'S INFORMATION
Name Ct y; { 1£,vefofMetd-1 t.:tJ--
Street Address P. 0 , "S:o\l I \'IZ..1
State __:('( ____ Zrp Code _____ 11_~£(~--
Phone Number ]~lf -]14'~--_______ _
J~Sd,u.Jfq;, :P~e. _
c,,, L'orlJt St-dio··L _
E-Mail Address J~_eud~ ~-C~ _ ·-
Fax Number -1'7lf -715.__'j__ __
I .. 1 •
Do any deed restrictions or covenants exist for this property? Yes __ No /
Is there a temporary blanket easement on th is property? If so, please provide th e Volume __ _
Acreage -Total Property {D • 'l..'?Q dl· Total# of Lots 31 R-0 -W Acreage~__,____._~~~
Existing Use: '\/Mfi..,rfr Proposed Use :~~2\Y~~~il.4--11~~Ml~'_J_'.....J!~ t,V
Number of Lots By Zoning District 3 Co I PD])
Average Acreage Of Each Residential Lot By Zoning District:
(), -Z.l I ?DD / __
Floodplain Asre~ ?<e~ st(~e.d' (O. orfb3 a/,;)
A statement addressing any differences between the Final Plat and approved Master Plan and/or Preliminary Plat (if
applicable):
Requested Variances To Subdivision Regulations & Reason For Same ~n~on~~~-------------
Requested Oversize Participation: -~O~n~n't'e __ . ________________________ _
Total Linear Footage of Parkland Dedication due prior to filing the Final Plat:
Proposed Public:
-
Streets
Sidewalks
Sanitary Sewer Lines
Water Lines
Channels
Storm Sewers
Bike Lanes I Paths
ACREAGE:
___ #of acres to be dedicated + $ ____ development fee
__ #of acres in floodplain Refer .f.o &ov..1lej~a.d
__ #of acres in detention MO.Sfex-"J)~VeltyJd f(ttt\
# of acres in greenw7ys • l JeJ_i __ Le) l lcuJ prevlo~ <j q UXh
OV\ Ct-olo\ll~ pro~) OR
FEE IN LIEU OF LAND:
___ #of Single-Family Dwelling Units X $556 = $ ___ _
_______ (date) Approved by Parks & Recreation Board
NOTE: DIGITAL COPY OF PLAT MUST BE SUBMITTED PRIOR TO FILING.
The applicant has prepared this application and certifies that the fa cts stated herein and exhibits attached hereto are true,
correct, and complete. The undersigned hereby requests approval by the City of College Station of the above-identified
final plat and attests that this request does not amend any covenants or restrictions associated with this plat.
.0~~~ Signature and Title ' 7 -· Date
: .. 1 '
SUPPLEMENTAL DEVELOPMENT PERMIT INFORMATION
Application is hereby made for th e following development specific si /waterway alterations . . . fYi ~
ACKNOWLEDGMENTS:
1. Wtl b i1Uilips , design engineer/owner, hereby acknowledge or affirm that
The information and conclusions contained in the above plans and supporting documents comply with the current
requirements of the City of College Station, Texas City Code, Chapter 13 and its associated Drainage Policy and Design
Standards. As a condition of approval of this permit application, I agree to construct the improvements proposed in this
application according to these docum nts and the requirements of Chapter 13 of the College Station City Code.
Contractor
CERTIFICATIONS: (for proposed alterations within designated flood hazard areas )
A. I, certify that any nonresidential structure on or proposed to be on this site
as part of this application is designated to prevent damage to the structure or its contents as a result of flooding from the
100 year storm.
Engineer Date
8. I, certify that the finished floor elevation of the lowest floor, including any
basement, of any residential structure, proposed as part of this application is at or above the base flood elevation
established in the latest ~~~~-1;~,.JQi.urance Administration Flood Hazard Study and maps, as amended .
~~\r-_ c:r: ~~,~~~
P .... "-'? .. oOetl"'"l'lG>ec. ......... r-'.lv~
Engineer Date
Engineer Date
D. I, , do certify that th e proposed alterations do not rai se the level of the 100
year flood above elevation established in the latest Federal Insurance Administration Flood Hazard Study.
Engineer Date
Conditions or comments as part of approval:----------------------------
In accordance with Chapter 13 of the Code of Ordinances of the City of College Station, measures shall be taken to
insure that debris from construction, erosion, and sedimentation shall not be deposited in city streets, or existing drainage
facilities. All development shall be in accordance with the plans and specifications submitted to and approved by the City
Engineer for the above nam ed project All of the applicable codes and ordinances of the City of College Station shall
apply
.,.r
DEVELOPMENT PERMIT
PERMIT NO . 07-110
CITY OF COLLEGE STATION
Planning & Devtlopmmt &rvius
FOR AREAS INSIDE THE SPECIAL FLOOD HAZARD AREA
RE: CHAPTER 13 OF THE COLLEGE STATION CITY CODE
SITE LEGAL DESCRIPTION:
Spring Creek Gardens Subdivision
Phase 3
10.23 acres
DATE OF ISSUE: January 15, 2008
OWNER:
Spring Creek CS Development, Ltd.
4490 Castlegate Drive
College Station, Texas 77845
SITE ADDRESS:
near Decatur Dr. and Arrington Rd. Intersection
DRAINAGE BASIN:
Spring Creek
VALID FOR 12 MONTHS
CONTRACTOR:
TYPE OF DEVELOPMENT: Full Development Permit
SPECIAL CONDITIONS:
All construction must be in compliance with the approved construction plans
All trees required to be protected as part of the landscape plan must be completely barricaded in accordance with Section
7.5.E., Landscape/Streetscape Plan Requirements of the City's Unified Development Ordinance, prior to any operations of
this permit. The cleaning of equipment or materials within the drip line of any tree or group of trees that are protected and
required to remain is strictly prohibited. The disposal of any waste material such as, but not limited to, paint, oil, solvents,
asphalt, concrete, mortar, or other harmful liquids or materials within the drip line of any tree required to remain is also
prohibited.
Full Development Permit
The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site
in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design
Criteria. If it is determined the prescribed erosion control measures are ineffective to retain all sediment onsite, it is the
contractors responsibility to implement measures that will meet City, State and Federal requirements. The Owner and/or
Contractor shall assure that all disturbed areas are sodden and establishment of vegetation occurs prior to removal of any
silt fencing or hay bales used for temporary erosion control. The Owner and/or Contractor shall also insure that any
disturbed vegetation be returned to its original condition, placement and state. The Owner and/or Contractor shall be
responsible for any damage to adjacent properties, city streets or infrastructure due to heavy machinery and/or equipment
as well as erosion, siltation or sedimentation resulting from the permitted work.
In accordance with Chapter 13 of the Code of Ordinances of the City of College Station, measures shall be taken to insure
that debris from construction, erosion, and sedimentation shall not be deposited in city streets, or existing drainage
facilities .
I hereby grant this permit for development of an area inside the special flood hazard area. All development shall be in
accordance with the plans and specifications submitted to and approved by the City Engineer in the development perm it
application for the above named project and all of the codes and ordinances of the City of College Station that apply.
Date
//!<hr-
Date
z_/u lor
ORDINANCE NO. ----
AN ORDINANCE AMENDING CHAPTER 10, "TRAFFIC CODE", OF THE CODE OF
ORDINANCES OF THE CITY OF COLLEGE ST A TION, TEXAS, BY AMENDING
SECTION 4E ''NO PARKING" TO INCLUDE PROHIBITING PARKING ON THE UBL C
ALLEY SOUTH OF THE 4200 BLOCK OF ALEXANDRIA UNTI MARCH 8, 2009;
PROVIDING A SEVERABILITY CLAUSE; DECLARING A PENALTY; AND ROVIDING
AN EFFECTIVE DA TE.
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF COLLEGE STATION,
TEXAS:
PART 1:
PART 2:
PART 3:
That Chapter 10, "Traffic Code", of the Code of Ordinances of the City of College
Station, Texas, be amended as set out in Exhibit "A", attached hereto and made a
part of this ordinance for all purposes.
That if any provisions of any section of this ordinance shall be held to be void or
unconstitutional, such holding shall in no way effect the validity of the remaining
provisions or sections of this ordinance, which shall remain in full force and effect.
That any person, firm, or corporation violating any of the provisions of this chapter
shall be deemed liable for a civil offense and/or guilty of a Class C misdemeanor,
and, upon a finding of liability thereof, shall be punished by a civil penalty of not
less than One Dollar ($1.00) nor more than Two Thousand Dollars ($2,000.00), or
upon conviction thereof, shall be punished by a fine of not less than Twenty-five
Dollars ($25.00) nor more than Five Hundred Dollars ($500.00). Said Ordinance
becomes effective ten (I 0) days after date of passage by the City Council, as
provided by Section 35 of the Charter of the City of College Station.
PASSED, ADOPTED and APPROVED this ___ day of _________ , 2008.
ATTEST:
City Attorney
Olgroupllegallordinance/amendmentform.doc
Rev. 2107 193
APPROVED:
MAYOR
Check type of mail Of service: ¢~ Name a~~J\'il'ender . "8rvo~ COLLEGE STATION 8 g~~fied
P. 0 . BOX 9960 D Delivery Confirmation
D Recorded Delivery (International)
D Registered
Affix Stamp Here
(If issued as a
certificate of mailinf
or for additional
copies of this bill)
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Colleoe Station, TX 77842 JJ~o~~_n:_~r_:~_s_M_aii __ _
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0 Signature Confirmation Postmark and
Date of Receiot
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02 1M $ 01.75°
0004227425 FEB 12 2008
Line Article Number
4 DUGGAN, KELLI & JOSHUA L COHEN
-4210 ALEXANDRIA A VE
5 COLLEGE ST A TION, TX 77845
6
7 1
_ TERRAL, CY & EMILY
8 4208 ALEXANDRIA A VE
COLLEGE STATION, TX 77845
9
-----j
1(
-WALKER, JASON & WEI
11 4212 ALEXANDRJA A VE
-COLLEG E STATION, TX 77845
1~ TRAN, HAT & LOI P NGUYEN
-4214 ALEXANDRIA A VE
1~ COLLEGE STATION, TX 77845
1E
Total Number of Pieces
Listed by Sender
Total Number of Pieces
R~i~d••~•
PS Form 3877, August 2000
Addressee Name, Street, and PO Address Postage Fee Har
Ch MAllEDFROM ZIPCODE 77840
,____
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Postmaster, Per (Namerrceiving emp!fyee) The full declaration of value is required on a I domestic and international registered mail. The maximum indemnity payable for the
reconstruction of nonnegotiable documents under Express Mail document reconstruction insurance is $500 per piece subject to
additional limitations for multiple pieces lost or damages in a single catastrophic occurrence. The maximum indemnity payable
on Express Mail merchandise insurance is $500, but optional Express Mail Service merchandise insurance is available for up to
":::-;""" '" some, but not all countries. The maximum indemnity payable is $25,000 for registered mail. See Domestic Mail
) Manual R900, S913, and S921 for limitations of coverage on insured and COD mail. See International Mail Manual for limitations
of coveraae on international mail. Snecial handlinn charnes annlv onlv to Standard Mail (A) and Standard Mail (Bl oarcels.
Complete by Typewriter, Ink, or Ball Point Pen
Name ~§.IJ<sender
CITY OF COLLEGE STATIO~
P.O. Box 9960
---,---C~o~l~lege Station, TX 77842
Line! Article Number
1 CHAPA, ROLANDO XAVIER II & MINDY ~ SUE GRAYSON
4216 ALEXANDRIA A VE
-CO LL EGE STATION, TX 77845
4 HERBST, TIMOTHY & MOLLY
-4218 ALEXANDRIA A VE
5 COLLEGE STATION, TX 77845
6
7
-
8
-
9
10
-
11
FLOWERS, NOLAN RAUL & KIMB ERLI E J
4220 ALEXANDRIA A VE
COLLEGE STATION, TX 77845
EGGEBRAATEN, DEBORAH LYNN
4222 ALEXANDER A VE
COLLEGE STATION, TX 77845-3990
1 ~ JONES, JOSHUA & ERIN
-4224 ALEXANDRIA A VE 1:'. COLLEGE STATION, TX 77845-3990
14
Total Number of Pieces
Listed by Sender
Total Number of Pieces '~"0
PS Form 3877, August 2000
Check type of mail or service: Affix Stamp Here
(If issued as a
certificate of mailing,
or for additional
copies of this bill)
•
(,~~ ;i~1~=7=5:--o D Certified
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D Delivery Confirmation
D Express Mail
D Insured __ _
D Recorded Delivery (International)
D Registered
D Return Receipt for Merchandise
D Signature Confirmation Postmark and
Date of Receiot
Addressee Name, Street, and PO Address Postage Fee Hane
Cha
0004227425 FEB 12 2008
MAILED FROM ZIP CODE 77840 t-----c---
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Postmaster, Per ('In e of receiving employee)
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The full declaration of value is required on a I domestic and international registered maiL The maximum indemnity payable for the
reconstruction of nonnegotiable documents under Express Mail document reconstruction insurance is $500 per piece subject to
additional limitations for multiple pieces lost or damages in a single catastrophic occurrence, The maximum indemnity payable
on Express Mail merchandise insurance is $500, but optional Express Mail Service merchandise insurance is available for up to
$5,000 to some, but not all countries, The maximum indemnity payable is $25,000 for registered maiL See Domestic Mail
Manual R900, S913, and S921 for limitations of coverage on insured and COD maiL See International Mail Manual for limitations
of coverage on international maiL Special handling charges apply only to Standard Mail (A) and Standard Mail (8) parcels,
Complete by Typewriter, Ink, or Ball Point Pen
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Name and Address of Sender
.. 6(J>i~F COLLEGE STATIC~
P.O . Box 9960 -----,--r.n-·lle~Station~ TX 77842
Line vVI Article Number
2
-
3
4
5
6
7
8
9
10
11
12
13
14
15
PEKAR, MATTHEW J & KIMBERLY A
4226 ALEXANDRIA A VE
COLLEGE STATION, TX 77845
HILL, DA YID S & KRISTIN D
4228 ALEXANDRIA A VE
COLLEGE STATION , TX 77845
Total Number of Pieces
Listed by Sender
Total Number of Pieces
Received at Post Office
PS Form 3877, August 2000
Check type of mail or service: Affix Stamp Here
(If issued as a
certificate of mailing
or for additional
copies of this bill)
•
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D Certified
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Date of Receint
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The full declaration of value is required on a I domestic and international registered mail. The maximum indemnity payable for the
reconstruction of nonnegotiable documents under Express Mail document reconstruction insurance is $500 per piece subject to
additional limitations for multiple pieces lost or damages in a single catastrophic occurrence. The maximum indemnity payable
on Express Mail merchandise insurance is $500, but optional Express Mail Service merchandise insurance is available for up to
$5,000 to some, but not all countries. The maximum indemnity payable is $25,000 for registered mail. See Domestic Mail
Manual R900, S9t 3, and S921 for limitations of coverage on insured and COD mail. See International Mail Manual for limitations
of coveraae on international mail. Soecial handlina charaes aoolv onlv to Standard Mail fAl and Standard Mail fBl oarcels.
Complete by Typewriter, Ink, or Ball Point Pen
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CITY OF COLLEGE STATION
February 11, 2008
ED FROEHLING BUILDER INC
3887 HIGH LONESOME
COLLEGE STATION, TX
77845-9443
RE: Temporary Parking Removal on the Alley that is South of the 4200 Block of
Alexandria Avenue
Dear Ed Freehling Builder Inc.:
The City of College Station was contacted by Wallace Phillips of Spring Creek CS
Development Ltd regarding the development of the 10.23 acres south of the 4200 Block
of the Alexandria A venue. The development has recently had a Final Plat approved titled
Spring Creek Gardens, Phase 3 and is a single family residential subdivision consisting of
37 lots served with internal local streets. Mr. Phillips has requested the issuance of
Building Permits on the proposed lots adjacent to the subject alley before construction of
the associated internal local streets. This request was reviewed by Fire Department,
Planning and Development Services Department, and the Public Works Department. It
was concluded that parking must be temporarily removed from the subject alley to ensure
emergency service vehicular access for the issuance of the subject Building Permits. The
proposed length of the temporary parking removal is from March 8, 2008 to March 8,
2009.
You are being contacted because the parking which is being recommended for removal is
adjacent to your property (please see enclosed map). The proposed ordinance removing
parking on this alley that is south of the 4200 Block of Alexandria A venue will be sent to
the College Station City Council on February 28, 2008. If you have any questions or
concerns, please contact me before February 22, 2008 at (979) 764-3570.
Sincerely,
~~ Alan Gibbs, P.E.
City Engineer
cc: Mark Smith, P.E., Director of Public Works
*CIVIL DEVELOPMENT, Ltd.*
CIVIL ENGINEERING & DESIGN-BUILD SERVICES
SPRING CREEK GARDENS -PHASE 3
Revised Enginee r's Estim ate
December 19, 2007
Item Estimated Unit Unit P1ice Estimated Cost
o._I
Description _J_ Quantity J_
Streets & Sitework
1 !Mobilization/Construction Staking I
2 Clearing & Grubbing I 3 1Excavation/Grading (est. cut= 2550 cy)
4 ~Mixing & Compaction of Lime Stabilized Subgrade (6" depth) l 5 Hydrated Lime (27 lb/sy)
6 Base Material -6" depth
7 Asphalt Paving -2" depth I
8 Concrete Curb and Gutter (all types)
9 ADA Ramp -regular
10 +ADA Ramp -comer J -11 Sidewalk -4" depth
12 Concrete Apron -6" depth
13 Emergency Access Gate
14 Hydromulch Seeding (curb to ROW, excluding SW)
Storm Drainage
15 118" RCP Storm Drain, C-76 Type III, structural backfill
16 24" RCP Storm Drain, C-76 Type III, structural backfill
17 24" HDPE Storm Drain, structural backfill
18 24" HDPE Storm Drain, non-structural backfill
19 130" HDPE Storm Drain, non-structural backfi ll
20 5' Recessed Inlet
21 1 O' Recessed Inlet
22 Area Inlet/Junction Box
23 Connect to Existing 6' Diameter Stotm Drain Manhole
24 Headwall/Outlet Structure for 24" HDPE
25 Construction Exit
26 Silt Fence
27 TV In spection (storm sewer)
Page 1 of 2
LS 12,500.00 12,500
2.8 AC 2,000.00 5,600
LS 17,000.00 17,000
5,112 SY 2.00 10,224
69 j TN 120.00 8,280
3,954 SY 8.00 31 ,632
3,954 SY 8.75 34,598
2,564 LF 8.75 22,435
1 EA 600.oo l 600
1 EA 700.00 700 _, 1 1,430 SF 3.50 5,005
1,361 SF 5.50 7,486
1 SF 1,500.00 1,500
2,906 SY 0.65 1,889
Subtotal -Streets & Sitework $159,448
31 LF 56.00 1,736
152 LF 71.00 10,792
100 LF 38.00 3,800
330 LF 34.00 11 ,220
177 LF 40.00 7,080
3 EA 2,600.00 7,800
2 EA 3,500.00 7,000
2 EA 5,000.00 10,000
EA 2,000.00 2,000
EA 3,500.00 3,500
1 EA 1,500.00 1,500
855 LF 3.00 2,565
790 LF 10 .00 7,900
Subtotal -Storm Drainage $76,893
Ci/'~()
18{"31 /61
q~
SPRING CREEK GARDENS -PHASE 3
Revised Engineer's Estimate
December 19, 2007
Item
No. Description
Water
3" Water PVC CL200 (C909) -structural backfill
3" Water PVC CL200 (C909) -non-structural backfill
6" Water PVC CL200 (C909) -structural backfill
28
29
30
31
32
33
34
35
36
37
38
39
40
41
8" Water PVC CL200 (C909) -structural backfill r
Fire Hydrant Assembly (incl. 6"x6" tee, valve, bend & hydrantL
12" M.J. Gate Valve
8" M.J. Gate Valve
6" M.J. Gate Valve
3" M.J. Gate Valve
12"x 8" M.J. Tee
8"x 6" M.J. Tee
8"x 11.25° M.J. Bend
6"x 45° M.J. Bend
3"x 22.5° M.J. Bend
42 8"x 3" M.J. Reducer
43 6"x 3" M.J. Reducer
44 12" Blow Off Assembly
45 Connect to existing water line
46 l" Water Service, s._15 ft (avg length = 2 ft)
47 ll" Water S~rvice, > 15 ft (avg length = 74 ft)
48 1.5" Water Service, :S 15 ft (avg length = 2 ft)
49 I 1.5" Water Service,> 15 ft (avg length = 55 ft)
50 8" Sewer SDR 26 D-3034 -structural backfill
Sewer
51 8" Sewer SDR 26 D-3034 -non-structural backfill
52 6" Sewer SDR 26 D-3034 -structural backfill
53 6" Sewer SDR 26 D-3034 -non-structural backfill
54 6" Sewer SDR 26 D-2241 -structural backfill
55 6" Sewer SDR 26 D-2241 -non-structural backfil l
56 4' Manholes -O' -8.00' Depth
57 4' Manholes -8.01' -10.00' Depth
58
59
60 4" Sewer Service,>
61 TV In spection
I
Estimated
Quantity
60
517
27
322
1
2
1
1
5
2
6
1
1
2
4
2
4
11
204
236
67
613
60
155
4
3
12
7
1,337
Unit Unit P1ice Estimated Cost
15.00
12.00
22.00
25.00
LF
LF
LF
LF
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
2_,900.00t
1,650.00
1,200.00
950.00
500.00
850.00
450.00
375.00
325.00
250.00
t
350.00t
300.00
850.00
500.00
500.00
1,3 00.00 -~
650.00
1,600.00
Subtotal -Water
LF 34.00
LF 26.00
LF 29.00
LF 22 .00
LF 32.00
LF 24.00
EA 2,500.00
EA 2,700.00
EA 2,000.00
EA 650.00
EA 1,2 50.00
LF 3.50
Subtotal -Sewer
900
6,204
594
8,050
2,900
1,650
1,200
950
1,000
850
450
1,875
650
1,500
350
300
1,700
500
2,000
2,600
2,600
17,600
$56,423
6,936
6,136
1,943
13 ,486
1,920
3,720
10,000
8,100
2,000
7,800
8,750
4,680
75,471
TOTAL CONSTRUCTION $368,234
Page 2 of 2
Notice of Intent (NOi) for Storm Water
Discharges Associated with Construction
Activity under TPDES General Permit
(TXR150000)
TCEQ Office Use Only
Pe1mit No.:
• ii§§ ~ TCEQ
RN :
CN:
Sign up now for on line 0 1 athttp://\\ww.tc eq.state.ix.us/permittingistrcrs/stecrs.htrnl Get Instant Approva l
Did you know you can pay on line'! Go to https://wwwfJ.tccq.state.tx.us/epayi
Select Fee Type: GENERAL PERM IT CONSTRUCTION STORM WATER DISCHARGE NO i APPLICA TIO
Application Fee: You mu st pay the $100 Application Fee to TCEQ for the application to be considered compl ete.
this fee?
Check/Money Order No.:
Voucher No.: ·-IMPORTANT:
•Use the attached INSTRUCTIONS when completing th is form.
·After completing thi s form, use the attached CUSTOMER CHECKLIST to make certain all items are complete and accurate.
·Missin , ille ible, or inaccurate items ma dela final acknowled mentor covera e under the eneral ermit.
A. OPERA TOR (applicant)
I. If the applicant is currently a customer with TCEQ, what is the Customer Number (CN) issued to this entity?
2. wh.ati~t~~ru11 [;:::Loc0l)~?veJopVV\eVL+, Lfd (Th~l nam:lwsl be spelled exactly as filed with the Texas Secreta1J' of Stale, County, or in the legal doc11111e11tfor111i11g the entity.)
3. What is the applicant's mailing address as recognized by the US Postal Service?
City:
4. Phone No.:
5. Fax No.:
G. Indicate the type of Customer:
7.
8.
Independent Operator:
0 Individual
0 Corporation
0 State Government
Oother:
_t2JYes
Number of Employees: ~ 0-20;
Suite No./Bldg. No./Mail Code :
State: TX.
Count ry Code:
Extension:
E-mail Address:
O sole Proprietorship-0.B.A.
0 Federa l Government
0 County Government
ZIP Code:
Postal Code: -
b2J Limited Partnership
0 General Partnership
0 City Government
0 No (If governmental entity, subsidiary, or part of a larger corporation , check "
D 21-100; D 101-2so; 0 25 1-500; or O SOi or higher
9. Customer Business Tax and Filing Numbers (This item is not applicable to ludividuals. Covem111ent. GP or Sole Proprietor.)
REQUIRED for Corporati ons and Limited Partnerships
State Franchise Tax ID Number: -Federal Tax ID: D Zo<:>(o4(n{t'l S--
TX SOS Charter (fil ing) Number: ·-DUNS Number (if known): -
B. BILLING ADDRESS
o".)
The Operator is responsible for paying the annual fee . The annual fee will be assessed to permits active on September I of each year. TCEQ wi II send a
bill to the address provided in this section. The Operator is responsible fo r terminating the pem1 it when it is no longer needed.
Is the billing add ress same as the Operator Address'l ~Yes, go to Section C. 0 No, fill out Section B
I . Billing Mailing Address: Suite No./Bldg.
Ci ty: State: ZIP Code:
2. Country Mai ling Information (if outside USA). Territory: Country Code: Posta l Code:
3. Bi lling Cont act (Attn or C/0):
4. Phone No.: Extension:
5. Fax No.: E-mail .'\lklrcss:
C. APPLICATION CONTACT
lfTCEQ needs additional infom1ation regarding this application, who should be contacted?
I. Name: Title:~ Company·
2. Phone No.:
3. Fax No.: E-mail Address:
I. TCEQ Issued RE Reference Number (RN) (if available):
2. Name of Project or Site (the name as known by the community where thi s facility/project is located):
(mmple ph'" ,,ff~ jo~d;S: ~' ;?,-:,~,;'~"~"'~~ ;Vi ~ t' D VII (Yvi~ J
3. Physical Address of Project or Si te: (enter in spaces below)
Street Number: Street Name: .sS
City: ZIP Code:
4.
6. What is the primary business of this entity? In your own words, brieny describe the primary business of the Regulated Entity:
(Do not repeat the SIC and NAICS code)
\ v-.(.,~ {, ~-¢V\ A dl (A_.-h'OV")
7. What is the mailing address and contact information for the regulated entity?
Is the RE mailing address the same as the Operator? ~Yes, address is the same as Operator ONo, provide the address
Street Number: Street Name:
City: State: ZIP Code:
E. GENERAL CHARACTERISTICS
I. I certify that the project/site is not located on Indian Country Lands?
If No, ou must obtain authorization throu h EPA, Re ion VI.
IZl. Yes
2. Is this NOi being submitted due to a change in Operator? 0Yes !2Sj No
3. What is the Standard Industrial Classification (SIC) code (see instructions for common codes):
Primary: \ \ Secondary: ~ l \
4 What is the total number of acres disturbed? ~ 3 -0 ~( r ,e~
Is the project site part of a larger common plan of development or sale? g)Yes D No
If Yes, the total number of acres di sturbed can be less than 5 ac res. V
If No, the total number of acres disturbed must be 5 or more. If the total number of acres disturbed is less than 5 then the project site does not qualify for
coverage through this Notice of Intent. Coverage will be denied. See th e requirements in the general permit for small construction sites.
5. Discharge Information
b. What is the segment number(s) of the classified water body(s) that the di scharge or potential disc harge will eventually ach'-' -
c. ls the discharge into an MS4? D Yes ~No
If Yes, what is the name of the MS4 Operator?
ote: The general permit requires you to send a copy of the NOi to the MS4 Operator.
6. Is the discharge or potential discharge within the Recharge Zone, Contributing Zone, or Contributing Zone within the Transiti on Zone
ofthe Edwards Aquifer? 0Yes ~No
If the answer is Yes, please note that a copy of the agency approved Plan required by the Edwards Aquifer Rule (30 TAC Chapter 2 13) must
be inclu ded in th e Sto1111 Water Po llution Prevention Plan.
TCH)-2!1!122 ( 12.!I J ·211!Jr11
F. CERTIFICATION
Check "Yes" to the certifications below. Failure to indicate "Yes" t.o ALL items may result in denial of coverage under the general permit.
I certify that I have obtained a copy and understand the terms and conditions of the general pem1it TX 150000.
I certify that the activities at this site qualify for coverage under the general permit TX 150000.
I understand that a Notice of Termination (NOT) must be submitted when this authorization is no longer needed.
I understand that permits active on September I st of each year will be assessed an Annual Water Quality Fee.
I certify that a Storm Water Pollution Prevention Plan (SWP3) has been prepared and implemented as required by the general permit.
Operator Certification:
I,
Typed or printename (Required)
llSJ Yes
~Yes
gj Yes
~Yes
~Yes
certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware there are significant penalties for submitting false information, including the possibility of fine and imprisonment for
knowing violations.
I further certify that I am authorized under 30 Texas Administrative Code §305.44 to sign and submit this document, and can provide documentation in
proof of such authorization upon request.
Signature: dff~ tf1'7~
(Use blue ink)
Date: _ _,__/_' ... _,_/_,_/_-~O~g'---· ___ _
TC EQ-20022 ( 12/0 112006)
ENGINEERING COMMENTS NO. 1
F~lat Comments:
../. Th~ sement between lots 21 and 22 is more appropriately a PUE as storm and
nitary will be located within it.
. Please adjust the hatching on the Greenway dedicated areas and the Common
pea as they are very similar.
~The "See Note 6" label on the 100-yr Floodplain Boundary appears to be
mislabeled.
~FYI -Development surrounding the well site will be limited. Please contact the city
for additional information regarding allowed proximity/development in this area.
Construction Document Comments: ~YI -During construction, extra caution will need to be used in areas near
Conservation Easement and Deed Restricted Areas to not negatively impact the
vegetation and drainage pathways.
~YI - A perimeter fence shall be installed to protect Conservation Easement from
-~ite threats during construction.
~YI -Modifications to drainage discharge outfalls may be required to protect
Conservation Easement and Deed Restricted Areas. This will be determined at
Final Plat stage with review of construction documents.
c/.""ls the round storm sewer manhole downstream of Area Inlet No. 1 already being
constructed with the Decatur extension? ~ill the outlet structure/erosion control measures downstream of Decatur be
_ ptalled with the Decatur extension?
~Would it be appropriate to place a gate valve just past the fire hydrant on Emylee
~rt as to be able to isolate the 3-in main and keep the only fire hydrant in use?
~~ears a drop manhole is needed at Manhole No. 5
~lease remove all HOPE located under pavement. See below:
In light of the recent discussions on HOPE pipe deflecting out of round, we should require
RCP under public pavement. Where storm sewer is not under pavement, HOPE with cement
stabilized sand as in the structural trench requirements per detail 03-02 is always utilized is
the minimum acceptable. Note that design engineers are to specifically design and seal the
HOPE detail specific to each set of plans and site. In general we require structural trenching
within 5 ft of public back of curbs or under public sidewalks. HOPE is acceptable under
sidewalks and if the pipe is completely behind the curb. Use this guidance on the interim. We
can about this further in our BCS discussions to memorialize it in the guidelines.
-Alan Gibbs, P.E.
City Engineer
,/ City of College Station, Public Works
~-Please submit letter of acknowledgement.
Reviewed by: Josh Norton Date: December 18, 2007
* C1vIL DEVELOPMENT, Ltd.*
December 21 , 2007
Josh Norton
Development Services
City of College Station
College Station, Texas
CIVIL ENGINEERING & DESIGN-BUILD SERVICES
RE: LETTER ACKNOWLEDGING CITY ST AND ARDS
SPRING CREEK GARDENS, PHASE 3
COLLEGE STATION, TEXAS
Dear Mr. Norton:
The purpose of this letter is to acknowledge that the construction plans for the water, sanitary
sewer, streets and drainage systems for the above-referenced project, to the best of my
knowledge, do not deviate from the B/CS Design Guideline Manual. No alternate design or
construction methodology was used.
I also acknowledge that, to the best of my knowledge, the details provided in the construction
plans are in accordance with the B/CS Standard Details.
J e Schultz, P.E.
Engineering Manager
Water System Report
for
Spring Creek Gardens, Phase 3
College Station, Texas
December 2007
Prepared By:
Civil Development, Ltd.
2033 Harvey Mitchell Parkway South
College Station, Texas 77840
(979) 764-7743
SCALE: NOT TO SCALE
/
/
/ (
;-c,V:L /?~~~~,~~ f:.t.;--S f:J I=\ ING CRE EK GARDE: f\J S f:J H 3
1(1 ... t· ·1~·:11• l•r•· ~ s ... :,1 "
''·'''"''
5
""·' ,, . .,,,,°''' WATER SYSTEM SC HEMATIC
p o o,1 .. 1 rnz.:i cuna9<;f S1;11o0n. ra,(,1s 1;a.12
19791 704-1743 F~.t (979) 764-7759
/
J4 , /
./
/
/ /
N.T.S.
Decatur FH 1
\ ~\
EXHIBIT
B
I
Label I -·-·----I
I
P-1
P-2
P-3
P-4 I I
I
P-5 I P-6 I P-7 I
P-8
I P-9
Exhibit C
Spring Creek Gardens, Phase 3
Water System Analysis -FIRE FLOW
December 10, 2007
Water CAD PIPE SUMMARY
I I
Length I Di•moto< Material Hazen-
Dischar:e ) __ V~l~city
I Williams C -·--------------------ft in I gpm I ft/s
185 3 PVC 150
I
-9.00 0.41
333 8 PVC 150 -1054.00 6.73 -·-·· 371 12 PVC I 150 I -1054.00 2.99
54 8 I PVC 150 -1054.00 6.73
I
I 81 8 PVC 150 I -1054.00 6.73
477 8 I PVC 150 0.00 0.00
518 12 ! PVC 150 0.00 0.00
619 12 PVC 150 I 0.00 0.00
406 3 PVC 150 I 27.00 1.23
Highest Velocity in Ph 3 6.73
Water CAD JUNCTION SUMMARY
Do~ Calculated I Label Elevation Hydraulic Pressure
Grade I
I ft ft I psi
Decatur FHl 273 0.00 513 .94 104.24
J2 289 0.00 514.74 97.67
J3 289 0.00 515.57 98.03
J4 269 0.00 513.94 105.97
Jct 1 282.5 0.00 513 .94 100.13
Sp Gard FHl 288 0.00 514.74 98.10
SCG3-l 280 9.00 508.75 98.97
SCG3-2 275 27.00 507.96 100.79
SCG3-FH-l 280 1,018.00 508.80 98.99
Tested FH 289 0.00 516.82 I 98.57
Lowest Pressure in Spring Crk Gardens Ph 3 1 98.97
Junctions in
Ph 3
Pipes in
Ph 3
In Ph 3
Sewer System Report
for
Spring Creek Gardens, Phase 3
College Station, Texas
December, 2007
Prepared B y:
Civil Development, Ltd.
2033 Harvey Mitchell Parkway South
Coll ege Station, Texas 77840
(979) 764-7743
Line
From To
(/) 0 ....l
c ..,
"O
(/) ..,
c:'.
267
\.II-I # M l-I # GPO/lot
I
~ u ..... ..,
E E 0 u
I
GPO per
Acre
\·11-17 M !-14 6 0
..,
"O 0 ;z: ..,
E 0
"O 0 ;z: W: 2 ;:::
.2
I t..L.,
GPO I
1,602 I
---------·
\ 1115 0 MH4 13
\11-14
\11-1 6
.\11-13
\1112
-
M!-13
M!-13
M!-12
Ml-II
---
2 0 ---
0 2.236 ----
16 0 --
0 0
3,471 I
534 I
3,354 l
4,2n I
I ----
I -
-
5,073
-
8,961
13,233
Exhibit B
Spring Creek Gardens, Phase 3
Sanitary Sewer Analysis
Flow Calculations
Average Daily
Flows (ADF)
GPO I CFS
1,602 0.0025
3,471 0.0054
5,607 0.0087
3,354 0.0052
13,233 0.0205
13,233 0.0205
Infiltration Peaking
(10% ADF) Factor
CFS
0.0002
0.0005
0.0009
0.0005
0.0020
0.0020
Ex hib it I
Page I of I
I
I 4.00
4.00
4.00
4.00
4.00
4.00
I
I
Peak
Flows
CFS
0.01
0.02
0.04
0.02
0.08
0.08
Size Material
I
(in .) I
6 1 03034
6 0 3034
6 03034
6 03034
8 03034
8 03034
I
I
Pipe Calculations
I
Manning Min.
1 .d Friction Design
.nsi e Slope Slope
Diameter Peak Peak
'
Inches I I
5.793 I i
5.793 I I
Flows , Flows
I
% %
0.0004 0.80
0.0018 0.80
I I I Actual Pipe
Slope (if Slope
1 known) 'Check
%
1.00 OK -----
' 1.00 OK ·----·----·---
5.793 I 0.0048 0.80 1.00 I OK ' +--
5.793 0.0017 0.80 1.00 OK
7.754 I 0.0057 0.40 0.50 OK
7.754 0.0057 0.40 0.50 OK ---------· ---------
Drainage Report
for
Spring Creek Gardens Subdivision
Phase 3
College Station, Texas
, December 2007
Developer:
Spring Creek CS Development, Ltd.
4490 Castlegate Drive
College Station, Texas 77845
(979) 690-7250
Prepared B1 ·:
Civi l Development, Ltd .
2033 Harvey Mitchell Parkway South
College Station, Texas 77840 ,
(979} 764-7743
ENGINEER
Drainage Report -Executive Summary
Spring Creek Gardens Subdivision, Phase 3
College Station, Texas
December 10, 2007
Civil Development, Ltd. -Ginger Urso, P.E. (ginger@cdlbcs.com)
P.O. Box 11929
College Station, Texas 77842
Phone: (979) 764-7743 Fax: (979) 764-7759
OWNER/DEVELOPER
Spring Creek CS Development, Ltd.
4490 Castlegate Drive
College Station, Texas 77845
Phone: (979) 690-7250
GENERAL DESCRIPTION AND LOCATION
This project consists of the development of Phase 3 of the Spring Creek Gardens Subdivision in College
Station. Phase 3 is a single-family residential development with one lot for administrative or professional
offices, which will include the construction of utilities and infrastructure.
Phase 3 is located on Decatur Drive to the west of the Spring Creek Townhomes development and south of
the Shenandoah Subdivision. The entire site lies within the corporate limits of the City of College Station.
Area: 10.23 acres
Existing Land Use: Vacant
Proposed Land Use: Single-Family Residential (36 lots), Office (1 lot)
Number of Lots: 36 residential, 1 office
Drainage Basin: Spring Creek Tributary A
FEMA FIRM: #48041 C0205 D, dated 2/9/2000
Floodplain: A portion of this phase of the development lies within the floodplain. The floodplain
areas are within proposed Greenway Areas of this development.
HYDROLOGIC CHARACTERISTICS
The existing site is predominately open with some wooded areas. The elevations range from 277 to 283,
sloping in a southerly direction, where runoff enters Tributary A of Spring Creek on the adjacent tract, which
ultimately flows into Spring Creek. A detention pond was constructed on the Crowley Tract downstream of
this development to control the increase in runoff from this property.
The runoff from a portion of the development wi II be captured by the proposed storm sewer system and
discharged into the sto1111 sewer system for Decatur Drive, which is sized to handle all the runoff from the
development. However, all of thi s development cannot be discharged into the storm sewer because of the
elevation of the site.
An evaluation of pre-and post-development off-si te discharges has been performed, and the results are
shown in the following tables. Pre-development drainage areas are shown on Exhibit C, and post-
development drainage areas are shown on Exhibit A.
Table 1 -Pre-& Post-Development Comparison, Discharge Poi nt A
Location 0 10 0 100
(cfs) (cfs)
Pre-Development
Total@ Discharge Point A 14.1 19.1 (Drainage Area 101)
Post-Development
Total@ Discharge Point A 13.9 18.9 (Pipe 7+ Drainage Area 207)
Decrease 0.2 0.2
Table 2 -Pre-& Post-Development Comparison, Discharge Point B
Location 0 10 0100
(cfs) (cfs)
Pre-Development
Total@ Discharge Point B 18.3 24.6 (Drainage Areas 102 & 103)
Post-Development
Total@ Discharge Point B 17.9 24.2 (Drainage Areas 208 & 209)
Decrease 0.3 0.5
As Tables 1 & 2 show, the Pre-and Post-Development flows are virtually unchanged; therefore, no
downstream impact on the adjacent tracts is anticipated from this development.
GENERAL STORMW ATER PLAN
The drainage plan for this development will involve the installation of pipes, inlets & j unction boxes, which
will collect and transmit the runoff into the storm sewer system for Decatur Drive or into existing drainages
which flow across the adjacent tracts and then into Tributary A of Spring Creek.
The detention pond for this proposed development is located on the Crowley Tract.
The discharge from Pipe 7 into the COE protected area is the same as the pre-development discharge, and an
oversized headwall with dissipater blocks and rock riprap will be installed to further reduce the possibility of
damage to this area.
COORDINATION & STORMW ATER PERMITTING
The project will require that a Notice of Intent be submitted to the Texas Commission for Environmental
Quality. No other permits are anticipated for this project.
The following items comprise this drainage report for thi s project:
Executive Summary
Technical Design Summary
Appendix A -Drainage Area Data & Calculation s
Appendix B -Gutter Depth Check Calculations & Exhibit (Exhibit A)
Appendix C -Storm CAD Pipe Analysis Data
Appendix D -Storm Sewer Design and Post-Deve lopment Drainage Area Map (Exhibit 8)
Appendi x E -Pre-Development Drainage Area Map (Exhibit C)
CERTIFICATION
I, Ginger L. Urso, Licensed Professional Engi neer No. 89503, State of Texas, certi fy that this report for the drainage
design for Spring Creek Gardens Subdivision, Phase 3, was prepared by me in accordance with the provisions
of the Unified Storm water Design Guidelines.
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Start (Page 2.1)
Engineering and Design Professionals Information
E~~ineerJ Firm Name and Address Jurisdiction
City: Bryan C, v 1 I (7 ve ~mt'rd 1 L f),
f!& /3,ax II °t . 1 ·v-College Station
778L/2 Date of Submittal (y//e5e S't.),~,, t;_
I /J ec. 10 )_00 -7
Lead Engineer's Name and Contact Info (p hone, e-mail, fax) Other
G,~)(.\ e.-U r so 7bl/-77'-13
c; /n,;, f'r-6.1 cd I la cs. ( .;).n..,
Supporting Engineering I Cbtisul~ng Firm(s) Other contacts:
Developer I Owner I Applicant Information
Developer I ~plicanl Name al) Addresz:. Phone and e-mail Sik1 ~~ r{)e _CS ~v. 1 3 c)
b10-72SO Wc1/fqce fJJi,)/jJ5
'i'ICJO Ca.If Pc:al-c !Jr, ·v,,. C ~. 771'?11")
Property Owner(-$) if not Developer I Applicant (&address) Phone an d e-mail:
Project Identification
Development Name: .S-p:-/,0q Cree /<. Gq,_Jv,,1 s-j $Ik fJJ1o~e ~
Is subject property a site projecr,' a single-phase subdivision, or part of a multi-phase subdivision?
/Y},; fl . -IJJ10<~ 5..,LJ If multi-phase, subject property is phase 3 of 4
Legal description of subject property (phase) or Project Area:
(see Section II , Paragraph B-3a) /0 . 23 OC rf''5
If subject property (phase) is second or later phase of a project, describe general status of all
earlier phases For most recent earlier phase Include submittal and review dates
,. _.,
General Location of Project Ar~a, or subject pfperty whase) L,; c., f p.,i So vf~ o•f-' <.. -. Y1' '"') Cre.,.lc. -r;u>,·1'1,,,,,p5. E , s ,..,,o,-lh .,,. lU: '/•c-, .. /.J !--, '-le It -/-5o,_,f/, CJ
/J r:c~/vr i],..,·..-e_
In City Lim its? Extraterritorial Jurisdiction (acreage)
Bryan acres. Bryan College Station
College Stati on ((). 2 5 acres . Acreage Outside ET J
-----------···· ·------STORMWATER DESIGN GU IDE LINES
<Cff.:~C live fCei"Jn1a1y 2()()/
Pa~i e 3 of 26 APPENDIX D TECH DESICN SUMMARY
/\s Pev1sctl
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Continued (page 2.2)
Project Identification (continued)
Roadways abutting or within Project Area or Abutting tracts, platted land, or built
subject property: developments:
j)e.cQlvr ;:Jr, ·ve
Named Regulatory Watercourse(s) & Watershed(s): Tributary Basin(s): s; n~i Cr-ee /c_
Plat Information For Project or Subject Property (or Phase)
Preliminary Plat File#: Final Plat File #: Date:
Name: Status and Vol/Pg:
If two plats, second name: File#:
Status: Date:
Zoning Information For Project or Subject Property (or Phase)
Zoning Type: Existing or Proposed? Case Code:
Case Da te Status:
Zoning Type: Existing or Proposed? Case Code:
Case Date Status:
Stormwater Management Planning For Project or Subject Property (or Phase)
Planning Conference(s) & Date(s): Participants:
Preliminary Report Required? Su bmittal Date Review Date
Review Comments Addressed? Yes --No --In Writing? When?
Complia nce With Preliminary Drainage Report. Briefly describe (or attach documentation
explaining) any devi ation(s) from provisions of Preliminary Drainage Report, if any.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 4 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Continued (page 2.3)
Coordination For Project or Subject Property (or Phase)
Note: For any Coordination of stormwater matters indicated below, attach documentation
describing and substantiating any agreements, understandings, contracts, or approvals.
Coordination Dept. Contact Date: Subject
With Other
Departments of
Jurisdiction
City (Bryan or
College Station)
Coordination With Summarize need(s) & actions taken (inclu de contacts & dates):
Non-jurisdiction
City Needed?
Yes No -./" ----
Coordination with Sum marize need(s) & actions taken (include contacts & dates):
Brazos County
Needed?
Yes No v --
Coordination with Summarize need(s) & actions taken (include contacts & dates):
TxDOT Needed?
Yes No V --
Coordination with Summarize need(s) & actions taken (include contacts & dates):
TAMUS Needed?
Yes No v ----
Permits For Project or Subject Property (or Phase)
As to stormwater management, are permits required for the proposed work from any of the entities
li sted below? If so, summarize status of efforts toward that objective in spaces below.
Entity Permitted or
Approved ?
US Army Crops of
Engineers
No v Yes ---
US Environmental
Protection Ag ency
No v Yes ---
Texas Comm ission on
Environmental Quality
No Yes v
----
Brazos River
Authority
No v Yes ---
STORM WATER DESIGN GUIDELINES
Effective FebruC1ry 2007
Status of Actions (include dates)
ru a :i. wr/I ki e rPt u1;,.ecl /l ,-, 'o r_.
Ip C.a-i >f.,-.._,;~f . ;,,, -
Page 5 of 26 APPENDIX D TECH. DESIGN SUMMARY
As Revised
SECTIO N IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro(!ert~ Characteristics I Start (Page 3.1)
Nature and Scope of Proposed Work
Existing: Land proposed for development currently used , including extent of impervious cover?
Site __ Redevelopment of one platted lot, or two or more adjoining platted lots
Development __ Building on a single platted lot of undeveloped land.
Project __ Building on two or more platted adjoining lots of undeveloped land.
(select all __ Building on a single lot, or adjoining lots, where proposed plat will not form applicable) a new street (but may include ROW dedication to existing streets).
__ Other (explain)
Subdivision _· _Construction of streets and utilities to serve one or more platted lots
Development V Construction of streets and utilities to serve one or more proposed lots on
Project lands represented by pending plats.
Site projects: building use(s), approximate floor space, impervious cover ratio .
Describe Subdivisions: number of lots by general type of use, linear feet of streets and
Nature and drainage easements or ROW.
Size of
Pro12osed
Project
Is any work planned on land that is not platted If yes, explain :
or on land for which platting is not pending?
_i,LNo --Yes
FEMA Floodpl ains
Is any part of subject property abutting a Named Regulatory Watercourse I No __ Yes ~ (Section 11 , Paragraph B 1) or a tributary thereof?
Is any part of subject property in floodplain I No_ Yes v Rate Map'fBOilJ Co2os D area of a FEMA-regulated watercourse?
Encroachment(s) Encroachment purpose(s) __ Building site(s) __ Road cross ing (s) into Floodplain
areas planned? __ Utility crossing(s) __ Other"( explain):
No ~ --
Yes --
If floodplain areas not shown on Rate Maps, has work been done toward am ending the FEMA-
approved Flood Study to define allowable encroachments in proposed areas ? Explain
STORMWATER DESIGN GUIDELINES
l~ffective February 2007
Page 6 of 26 APPENDIX D TECH DESIGN SUMMARY
/\s Revisc-cl
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro11ert~ Characteristics I Continued (Page 3.2)
Hydrologic Attributes of Subject Property (or Phase)
Has an earlier hydrologi c analysis been done for larger area including subject property?
Yes Reference the st~dy ( & date) ,here, and ;:tach coxy if not alre~dy in City file$. frcn:.f. v j_J"f) /J rC-(1nocj'~ Sf-vj1 · ~r f e. .vr13f>?e;/ Crow fe1
Is the stormwater man~ent plan fo r the property in substantial conformance with the
earlier study? Yes No If not, explain how it differs.
No If subject property is not part of multi-phase project, describe stormwater management
plan for the property in Part 4.
--If property is part of multi-phase project, provide overview of stormwater management plan
for Project Area here. In Part 4 describe how plan for subject property will comply
therewith.
Do existing to pographic features on subject property store or detain runoff? V-No --Yes
Describe th em (include approximate size, volume, outfall, model, etc).
Any known drainage or flooding problems in areas near subject property? -----1L:1\Jo --Yes
Identify:
Based on location of study property in a watershed, is Type 1 Detention (flood control) needed?
(see Table B-1 in Appendix B)
__ Detention is required. Need must be evaluated. V"'Detention not required. --
What decision has been reached? By whom?
{)(./' s1:f-e de kl'l ft~,,, /s //f'OV/deol -jJr re. VI 'ov 5 c/eve/, I) If the need for In
Type 1 Detention How was determination made?
must be evaluated: I-I Was ~drf of -f ~~ dra,;.""J e s /,,,,Jf r.t'> cl J...0111 If
for f h1''> W~e,, dev"/~,,, e,.f .>Jq,.. f P.J.
STORMWATER DESIGN GUIDELINES
Effective February 2007
C?r<>et
Page 7 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revisecl ___________ .
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -ProQerty Characteristics I Continued (Page 3.3)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Does subject property straddle a Watershed or Basin divide? V No --Yes If yes,
describe splits below. In Part 4 describe desiqn concept for handlinq this.
Watershed or Basin Larger acreage Lesser acreage
Above-Project Areas(Section 11, Paragraph 83-a)
Does Project Area (project or phase) receive runoff from upland areas? vNo --Yes
Size(s) of area(s) in acres: 1) 2) 3) 4)
Flow Characteristics (each instance) (overland sheet, shallow concentrated , recognizable
concentrated section(s), small creek (non-regulatory), regulatory Watercourse or tributary);
Flow determination: Outline hydrologic methods and assumptions:
Does storm runoff drain from public easements or ROW onto or across subject property?
--No --Yes If yes , describe facilities in easement or ROW:
Are changes in runoff characteristics subject to change in future? Explain
Conveyance Pathways (Section 11, Paragraph C2)
Must runoff from study property v across lower properties before reaching a Regulatory
Watercourse or tributary? No Yes
Describe length and characteristics of each conveyance pathway(s). Include ownership of
property (ies ).
STORMW ATER DESIGN GUIDELINES
i:=rrecli ve February 2007
Page 8 of 26 APPENDIX. D TE CH. DESIGN SUMMARY
As Revise(! .
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Property Characteristics J Continued (Page 3.4)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Conveyance Pathways (continued)
Do drainage
easements
exist for any
part of
pathway(s)?
If yes , for what part of length? % Created by? __ plat, or
Pathway
Areas
Nearby
__ instrument If instrument(s), describe their provisions.
No
Yes
Where runoff must cross lower properties, describe characteristics of abutting lower
property(ies). (Existing watercourses? Easement or Consent aquired?)
Describe any built or improved drainage facilities existing near the property (culverts,
bridges, lined channels, buried conduit, swales, detention ponds, etc).
Drainage r--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-l
Facilities Do any of these have hydrologic or hydraulic influence on proposed stormwater
design? __ No __ Yes If yes, explain :
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 9 of 26 APPENDIX. D TECH DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Start (Page 4.1)
Stormwater Management Concept
Discharge(s) From Upland Area(s)
If runoff is to be received from upland areas, what design drainage features will be used to
accommodate it and insure it is not blocked by future development? Describe for each area,
flow section , or discharge point.
Discharge(s) To Lower Property(ies ) (Section 11 , Paragraph E1)
Does project incl ude drai~eatures (existing or future) proposed to become public via
platting? __ No __ Yes Separate Instrument? No Yes
Per Guidelines reference above, how will \/ Establishing Easements (Scenario 1) runoff be discharged to neighboring
property(ies)? __ Pre-development Release (Scenario 2)
Combination of the two Scenarios --
Scenario 1: If easements are proposed, describe where needed, and provide status of actions
on each. (Attached Exhibit # ) The ea Sc> me ...,fs show,1 qre 01'
tAe A-~ /,;'YI'.._&('( Pf4f t~ fh ,·~ / roJe cf.
Scenario 2: Provide general description of how re lease(s) will be managed to pre-development
conditions (detention , sheet flow, partially concentrated , etc.). (Attached Exhibit# )
Combination: If combination is proposed, explain how discharge will differ from pre-
development conditions at the property line for each area (or point) of release.
If Scenario 2, or Combination are to be used, has proposed design been coordinated with
owner(s) of receiving property(ies)? No --Yes Explain and provide
documentation
STORMWATER DESIGN GU IDELINES
Effective February 2007
Page 10of26 APPENDIX. D TECH . DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters J Continued (Page 4.2)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project
Identify gaining Basins or Watersheds and acres shifting:
Will project resu lt
in shifting runoff
between Basins or
between What design and mitigation is used to compensate fo r increased runoff
Watersheds? from gaining basin or watershed?
~o
Yes --
How will runoff from Project 1. V With facility(ies) involving other development projects
Area be mitigated to pre-2. __ Establishing features to serve overall Project Area. development conditions?
Select any or all of 1, 2, 3. __ On phase (or site) project basis within Project Area.
and/or 3, and explain below.
1. Shared facility (type & location of facility; design drainage area served; relationship to size of
Project Area): (Attached Ex hibit# )
f he .a~Jo , ~, ~j (1C!W /P1 f raj On cl De-l-e,)1911 t'~ f rovi'),.j on
' 1'rife 1J,-tl J~ Covf'r i J. e. entH~ ar("ci ol fh1'> devefr..-n,,.,,f I~
2. For Overall Project Area (type & location of facilities): (Attached Exhibit# )
3. By phase (or site) project: Describe planned miti gation measures for phases (or sites) in
subsequent questions of this Part.
Are aquatic echosystems proposed? --No --Yes In which phase(s) or
project(s)?
C'-· <J QJ (f) c QJ c >-Are other Best Management Practices for reducing stormwater poll utants proposed? ~
Cl.. No Yes Summarize type of BMP and extent of use: ----(f) c
.!:21 (f)
QJ 0 0 z
Ii If design of any ru noff-handling facilities deviate from provisions of B-CS Technical
Specifications, check type facility(ies) and explain in later questions
~ --Detentio n elements --Conduit elements --Channel features
<( Swales Ditches Inlets __ Valley gutters __ Outfall s ------
--Culvert featu res __ Bridges Other
STORMWATER DESIGN GUI DELINES
Effective February 2007
Page 11 of 26 APPENDIX. D TECH DESIGN SUMMARY
As Revisecl
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4 .3)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project (continued)
Will Project Area include bridge(s) or culvert(s)? ~No __ Yes Identify type and
general size and In which phase(s).
If detention/retention serves (will serve) overall Project Area, describe how it relates to subject
phase or site pr~ect (phy.jicajlocation, con;ey~nce/path'f.:J' s) .. cfstructiof sefncit lhr' Crow ~1 'de 01 ·'"' f'On IS oc,; JVS eL1f .o f ~ _s~vbJeJ f 'o/ert/' 7f drq,',,r;: c/1're cll7 1n 1-P S/'n;..,J &-~. J:. Creel.
Within Or Serving Subject Property (Phase, or Site)
If property part of larger Project Area, is design in substantial conformance with earlier analysis
and report for larger area? ~Yes No, then summarize the difference(s)
Identify whether each of the types of drainage features listed below are included, extent of use,
and general characteristics.
Typical shape? J Surfaces?
C'· -0
Q) (/) Steepest side slopes: Usual front slopes: Usual back slopes: (/)
::::! Q)
(/) >-
Q)
I
..c Flow line slopes: least Typical distance from travelway: _.g
-0 (Attached Exhibit# )
Q) 0 typical greatest
-0
(/) z
-0 r ro
2 Are longitudinal culvert ends in compliance with B-CS Standard Specifications?
Q) Yes No, then explain .<
(/) At intersections or otherwise, do valley gutters cross arterial or collector streets? -e Q) V-No __ Yes If yes explain ~ ('· >-
0-0 f ..c Q) ~ (/)
3 : Are valley gutters proposed to cross any street away from an intersection ? (/) Q) ID~ o V No __ Yes Explain (number of locations?) ~ 01z u; -0
I ~ c ro
<{
STORMWATER DESIGN GUIDELINES
[ffective Fehru<iry 2007
Page 12 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revised
S ECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.4)
Stormwater Management Concept (conti nued)
Wi thin Or Serving Subject Property (Phase, or Site) (continued)
Gutter line slopes: Least D~ 8Dc?o Usual 1% Greatest /.GI'%_
Are inlets recessed on arterial and collector streets? Yes --V No If "no",
identify where and why.
Will inlets capture 10-year design stormflow to prevent flooding of intersections (arterial
with arterial or collector)? ~ Yes __ No If no, explain where and why not
C'-·
\J Q) en Will inlet size and placement prevent exceeding allowable water spread fo r 10-year :::J .__ design storm throughout site (or phase)? ___Z Yes __ No If no, explain . Q)
:t::
:::J
Ol
"O ~ c \J
VYes cu Q) Sag curves: Are inlets placed at low points? No Are inlets and ..0 :::J --
L.... .~ co~t sized to prevent 100-year stormflow from ponding at greater than 24 inches? :::J -(.) c __ Yes __ No Explain "no" answers. 0 ..c (.)
.-t= -~
en Ci)
~ u;
Q) Will 100-yr stormflow be contai;//n combination of ROW and buried conduit on -< whole length of all streets? Yes __ No If no, describe where and why.
Do designs for curb, gutter, and inlets comply with B-CS Techn ical Specifications? V Yes __ No If not, describe difference(s) and attach justification .
Are any 12-inch la terals used? ~No --Yes Identify length(s) and where
used.
C'-·
\J Pipe ru ns between system / Typical Q) Longest en en access points (feet): :::J Q)
E >-
VYes ~vf Are junction boxes used at each bend? --No If not, explain where
and why. en
c cu 0 .__ z
\J
I §
E Are downstream soffits at or below upstream soffits? Least amount that hydraulic en
.!!:. Yes ~ No __ If not, explain where and why grade line is below gutter line
(system-wide):
J.J7' (10 ,,.)
--
STORM WATER DESIGN GUIDELINES
Effec11ve February 2007
Page 13 of 26 APPENDIX D TECH. DESIGN SUMMARY
As Reviser!
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.5)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Describe watercourse(s), or system(s) receiving system discharge(s) below
I/) (include design discharge velocity, and angle between converging flow lines). (!)
(.) c 1) Watercourse (o r system), veloc4 , and angle? (\} u; .S fJ. r / n J C r e e k . , > J / e = '10 ~ c
~ Ve /oc,fu o l ou l/;.// = ~ 2t.. .(,,5 ~o -g E 2) Watercourse (or system), velocity, and angle? ::J ..__ c 0 ·-...... c .
0 .2 ~-~ ~ Em I/)
m E ~ 3) Watercourse (or system ), velocity, and angle? ...... (\} (\} I/) I/) ......
>. ::; I/) (!) 0 c :Q ·-> ~ e
'O Q_
E ...... For each outfall above, wh at measures are taken to preven t erosion or scour of ..__ (!)
0 (!) receiving and all facilities at juncture? ...... ..c CJ) I/)
1) ?rov1c/Pcl CtJ ncrete loewa /1 u1 / el)(>r'l / J,·r;f,f .. /.,,.-L/o,k 2 (\} ..__
(\}
Q_ 2) (!)
I/)
c 3) ~
Are swale(s) situated along property lines between properties? ~No --Yes
Number of instances: For each instance answer the following questions.
Surface treatments (including low-flow flu mes if any):
('·
I/) Q)
~I/) ...... (!) Flow line slopes (minimum and maxi mum): I/) >-c
I
(\} ..__
'O
.3
-g 0
l/JZ Outfall characteristics for each (velocity, converg ent angle, & end treatment). ::J
j{
I/)
~
<( Will 100-year design storm runoff be co ntained within easement(s) or platted drainage
ROW in all instances? --Yes --No If "no" explain
STORMWATER DESIGN GUIDELI NES
Effective February 2007
Page 14 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revisecl
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4 .6)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
(/) Are roadside ditches used? ~No __ Yes If so, provide the following:
Q) Is 25-year flow contained with 6 inches of freeboard throughout? __ Yes No ..c --_.g Are top of banks separated from road shoulders 2 feet or more? __ Yes --No
0 Are all ditch sections trapezoidal and at least 1.5 feet deep? Yes No Q) ----
-0 For any "no" answers provide location(s) and explain: (/)
-0 ro 0 a:::
If conduit is beneath a swale, provide the following information (each instance).
Instance 1 Describe general location, approximate length:
(/)
Q) >-
1~ Is 100-year design flow contained in conduit/swale combination? --Yes --No
If "no" explain:
c
0 ro z ti Space for 100-year storm flow? ROW Easement Width t1i Swale Surface type, minimum Conduit Type and size, minimum and maximum
0 and maximum slopes: slopes, design storm:
~
('-· -0 (/)
Qi -0 ro c >. Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): c ro c
..c ro
u .._
c .E
Q) c
0.. 0 0 :..;::; Access Describe how maintenance access is provided (to swale, into conduit): '+-cu 0 E :::! .._
-~ .E -c c ·-
Q)
-0 E Instance 2 Describe general location, approximate length: <ll ro (/) (/) :::!
(/) Q)
c -0
0 > Is 100-year design flow contained in conduit/swale combination? Yes No ~ e ----
c 0.. If "no" explain:
·-a:; .c E Q)
0 ..c Space for 100-year storm flow? ROW Easement Width u (/) -2 Swale Surface type , minimum Conduit Type and size, minimum and maximum :::! ~ -0 and maximum slopes: slopes , design storm c cu
0 0.. u Q)
ill (/) Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type) ro c
~ 0
(/)
~
<( Access Describe how maintenance access is provided (to swale, into cond uit)
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 15 of 26 APPENDIX. D. TECH. DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.7)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
If "yes" provide the following information for each instance:
Instance 1 Describe general location, approximate len gth, surfacing:
c
~
E ()_ x
0 w
'---:t:: ui Is 100-year design flow contained in swale? Yes No Is swale wholly 0 Q) ----c >-within drai nage ROW? Yes No Explain "no" answers: :::J
I
----'--
Q)
-~ Q) Access Describe how maintenance access is provide: u Q)
'--0 -z :::J
!1 Instance 2 Describe general location, approximate length, surfacing :
Q) ·c ('-·
:::J (/)
.0 c
~ Q)
0 E
£ Q)
(/) Is 100-year design flow contained in swale? Yes No Is swale wholly -~ cu ----Q) within drainage ROW? __ Yes No Explain "no" answers: (/) '--Q) 0 --
Cii s :;::;
(/) 0
5: 0::: Access Describe how maintenance access is provided: g -.0
:::J
()_
Instance 31 41 etc. If swales are used in more than two instances, attach sheet
providing all above information for each instance.
"New" channels: Will any area(s) of concentrated flow be channelized (deepened,
widened, or straightened) or otherwise altered? --No --Yes If only slightly
C'-· shaped, see "Swales" in th is Part If creating side banks , provide information below.
-0 c Q) ·ro Will design re plicate natural chann el? Yes No If "no", for each instance (/)
0 ()_ ----()_ x describe section shape & area, flow line slope (min. & max.). surfaces. and 100-year 2 w design fl ow, and amount of freeboard: ()_
£.l ff) Instance 1: Q) c >-Q)
E
I
Q) > 0 Instance 2: '--()_
E 0 z
11 Instance 3:
u
STORMWATER DESIGN GUIDELINES
Effeclive February 2007
Page 16 of 26 APPENDIX. D TE CH. DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Dra inage Conce12t and Design Parameters I Continued (Page 4.8)
Stormwater Management Concept (continued )
Within Or Serving Subject Property (Phase, or Site) (continued)
Existing channels {small creeks}: Are these used? --No --Yes
If "yes" provide the information below.
Will small creeks and th eir floodplains remain undisturbed? __ Yes --No How
many disturbance instances? Identify each planned location:
For each location, describe length and general type of proposed improvement
(including floodplain changes):
For each location, describe section shape & area, flow line slope (min. & max.),
surfaces, and 100-year design flow.
~
-0 Q)
::J c :;:::; Watercourses {and tributaries): Aside from frin ge changes, are Regulatory c
0 Watercourses propo sed to be altered? __ No Yes Explain below. (.) --
en c Submit full report describing proposed changes to Regulatory Watercourses. Address
Q) existing and proposed section size and shape, surfaces, alignment, flow line changes, E
Q) length affected, and ca pacity , and provide full documentation of analysis procedures > 0 and data . Is full report submitted? Yes No If "no" explai n ..... --o_
E -a; c c ro All Proposed Channel Work: For all proposed channel work, provide information ..c 0 requested in next three boxes.
If design is to replicate natural channel, identify location and le ngth here, and describe
design in Special Design section of this Part of Report.
Will 100-year flow be contained with one foot of freeboard? --Ye s --No If
not, identify location and explain:
Are ROW I easements sized to contain channel and required maintenance space?
--Yes --No If not, identify location(s) and explain.
STORMWATER DESIGN GUIDELINES
Effecti ve f=e bruciry 2007
Page 17 of 26 APPENDIX. D TECH DESIGN SUMMARY
As l~evise d
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Pa rameters I Continued (Page 4.9)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
How many facilities for subject property project? For each provide info below.
For each dry-type facilitiy: Facility 1 Facility 2
Acres served & design volume + 10%
100-yr volume: free flow & plugged
Design discharge (10 yr & 25 yr)
Spillway crest at 100-yr WSE? __ yes --no __ yes --no
Berms 6 inches above plugged WSE? __ yes --no __ yes --no
Explain any "no" answers :
(/)
Q) >-
I For each facility what is 25-yr design Q, and design of outlet structure?
0 Facility 1: z vy Facility 2
Do ou tl ets and spillways discharge into a public facility in easement or ROW?
('-· Facility 1: __ Yes No Facility 2: Yes No -0 ------
Q) If "no" explain: (/)
0 Q_
0 .._ o._
(/) For each , what is velocity of 25-yr design discharge at outlet? & at spillway? Q) :-e Facility 1 & Facility 2: & -·-CJ ro Are energy dissipation measures used? No Yes Describe type and LL ----c
0 location :
~
Q)
Q)
0
Q)
4: For each, is spillway surface treatment other than concrete? Yes or no, and describe:
Facility 1:
Facility 2:
For each, what measures are taken to prevent erosion or scour at receiving facility?
Faci lity 1:
Faci lity 2
If berms are used give heights, slopes and surface treatments of sides
Facil ity 1
Facility 2
STORMWATER DESIGN GUIDELINES
Fffective Februar·y 2007
Page 18 of 26 AP PENDIX. D TECH. DESIGN SUMMARY
As Revisecl
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Pa rt 4 -Drainage Conce11t and Design Parameters I Continued (Page 4.10)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Do structures comply with B-CS Specifications? Yes or no, and explain if "no":
(fJ
Facility 1;
Q) :;:; =:o g Q) Facility 2: LL ::I c c :.;:::; 0 c :;:; 0 c (.)
Q) -a> For additional facilities provide all same information on a separate sheet. 0
Are pa rking areas to be used for detention ? __ No --Yes What is
maximum depth due to required design storm?
Roadside Ditc hes: Will culverts serve access driveways at roadside ditches?
--No --Yes If "yes", provide information in next two boxes.
Will 25-yr. flow pass without flowing over driveway in all cases? --Yes --No
Without causing flowing or standing water on public roadway? --Yes --No
Designs & materials comply with B-CS Technical Specifications? __ Yes --No
Explain an y "no" answers:
C'-· If)
Ol c
If) Are culverts parallel to public roadway alignment? Yes If) No Explain : 0 ----'-If) (.)
Q) Q)
m >-
> I ·c Creeks at Private Drives: Do private driveways, drives, or streets cross drainage c._
m ways that serve Above-Project areas or are in public easements/ ROW?
"O 0 No Yes If "yes" provide information below. Q) z ----~ v( How many instances? Describe location and provide information below.
Q) Location 1: _;:::
::I (.)
Q) Location 2: '-<(
Location 3:
For each location enter value for: 1 2 3
Design year passing without toping travelway?
Water depth on tra velway at 25-year flow?
Water depth on travelway at 100-yea r flow?
For more in stances describe locati on and same information on separate sheet.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 19 of 26 APPENDIX. D TE CH. DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters l Continued (Page 4 _ 11)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Named Regulatorv Watercourses {&Tributaries}: Are culverts proposed on these
facilities? --No __ Yes, then provide full report documenting assumptions,
criteria, analysis, computer programs, and study findin gs that su pport proposed
design(s)_ Is report provided? __ Yes --No If "no", explain:
Q) Arterial or Major Collector Streets: Will culverts serve these types of roadways?
Q) No Yes How many instances? For each identify the _r::_
ff) ----
2 location and provide th e information below_
ff) cu Instance 1: Q) ..__
>-~ I~ Instance 2
Instance 3: c
0
o~ z E
Yes or No for the 100-year design flow 1 2 3
·{! Headwater WSE 1 foot below lowest curb top?
Spread of headwater within ROW or easement?
E ('--cu Is velocity limited per conditions (Table C-11 )? ff) ff)
g1-o Explain any "no" answer(s): ·-c ~ cu
0 c ..__ 0
(J z
>-. cu cu t) 3: .2
-0 Q) cu _o Minor Collector or Local Streets: Will culverts serve these types of streets? 0 --..__ ..__
t) t) No Yes How many instances? fo r each identify the ·-ff) -Q) -----g -0 location and provide the information below:
Q_ Q)
~ Q_ Instance 1: cu c
-0 >-. Instance 2 Q) c ~ cu
~ 0 Instance 3:
..__ ff)
Q) Q) ~ t) For each instance en ter value, or "yes" I "no" for: 1 2 3 :J c
t) cu Design yr_ headwater WSE 1 ft below curb top? Q) u; ..__ c <( --100-yr max_ depth at street crown 2 feet or less? ~ 0 Product of velocity (fps ) & depth at crown (ft) = ? E ..__
0 Is velocity limited per conditions (Table C-11 )? ..___
Limit of down stream ana lysis (feet)?
Explain any "no" answers
STORMWATE R DESIGN GUIDELINES
Effective Febru;:1ry 2007
Page 20 of 26 APPENDIX D TECH_ DESIGN SUMMARY
As Revised
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters J Continued (Page 4.12)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
All Proposed Culverts: For all proposed culvert facilities (except driveway/roadside
ditch intersects) provide information requested in ne xt eight boxes.
Do culverts and travelways intersect at 90 degrees? Yes No If not, ----identify location(s) and intersect angle(s), and justify the design(s):
Does drainage way alignment change within or near limits of culvert and surfaced
approaches thereto? __ No --Yes If "yes" identify location(s), describe
change(s), and justification :
Are flumes or conduit to discharge into culvert barrel(s)? --No --Yes If yes,
identify location(s) and provide justification:
~ Are flumes or conduit to discharge into or near surfaced approaches to culvert ends? -0 Q)
:::J No Yes If "yes" identify location(s), describe outfall design treatment(s) c ----:;::; c
0 u -en t
Q) ...:::
:::J Is scour/erosion protection provided to ensure long term stability of culvert structural 0 components, and surfacing at cu lvert ends? --Yes --No If "no" Identify
locations and provide justification(s):
Will 100-yr flow and spread of backwater be fully contained in street ROW, and/or
drainage easements/ ROW? __ Yes --No if not, why not?
Do appreciable hydraulic effects of any culvert extend downstream or upstream to
neighboring land(s) not encompassed in subject property? --No --Yes If
"yes" describe location (s) and mitigation measures
Are all cu lvert designs and materials in compliance with 8-CS Tech. Specifications?
--Yes --No If not, explain in Special Design Section of this Part
STORMWATER DESIGN GUIDELI NES
Fffective February 2007
Page 21 of 26 APPE NDIX. D: TECH. DESIGN SUMMARY
As Revi sed
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.13)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Is a bridge included in plans for subject property project? VNo --Yes
If "yes" provide the following information.
Name(s) and functional classification of the roadway(s)?
What drainage way(s) is to be crossed?
VI
Q)
Ol
-0 ·;::: co
A full report supporting all aspects of the proposed bridge(s) (structural, geotechnical ,
hydrologic, and hydraulic factors) must accompany this summary report. Is the report
Yes No provided? ----If "no" explain:
Is a Stormwater Provide a general description of planned techniques:
c Pollution Prevention _5 .-If Fenc fr>~ . ro Plan (SW3P) ::l Tn/el f,ofe cl,;,,, a established for ..__ project construction? c("j nsf r ue I,~,.., E"x1/ ClJ ~ --No y/Yes J.l'f d ,"() 5<?(" c);;?~
Special Designs -Non-Traditional Methods
Are any non-traditional methods (aquatic echosystems, wetland-type detention, natural stream
re~tion , BMPs for water quality, etc .) proposed for any aspect of subject property proj ect?
__ No __ Yes If "yes" list general type and location below.
Provide full report about the proposed special design(s) in cluding ra tionale for use and
expected benefits. Report must substa ntiate that stormwater management objectives will not
be compromised, and that maintenance cost will not exceed th ose of traditional design
solution( s ). Is report provided?
STORM WATER DESIGN GUIDELI NES
I~ ffective February 2007
Yes ----
Page 22 of 26
No If "no" explain:
APPENDIX. D TE CH. DESIGN SUMMARY
As Revised ·-·---·· ..
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage ConceQt and Design Parameters I Continued (Page 4.14)
Stormwater Management Concept (con tinued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Special Designs -Deviation From B-CS Technical Specific ations
If any design(s) or material(s) of traditional runoff-handling facilities deviate from provisions of
B-CS Technical Specifications, check type facility(ies) and explain by specific detail element.
--Detention elements __ Drain system elements --Channel features
Culvert features Swales Ditches Inlets Outfalls ----------
__ Valley gutters __ Bridges (explain in bridge report)
In table below briefly identify specific element, justification for deviation(s).
Specific Detail Element Justification for Deviation (attach additional sheets if needed)
1)
2)
3)
4)
5)
Have elements been coordinated with the City Engineer or her/his designee? For each item
above provide "yes" or "no", action date, and staff name:
1)
2)
3)
4)
5)
Design Parameters
Hydrology
Is a map(s) showing all Design Drainage Areas provided? VYes --No
Briefly summarize the raie of. applications made o~ the Rational FonAla:
+:> Usr>J fc. eva(vq e 1/"Jfef~ C/'7d /;/e sr:z..~:S. 1so USecJ
esf,",,,,,c/fe jvf1-e 1 -lk<-V ./1' th 5 .
What is the size and location of largest Design Drainage Area to which the Rational Formula
has been applied? l/iO acres
STORMWATER DESIGN GUIDELINES
H fective Febru ary 2007
Location (or identifier) !305·,",, '201
Page 23 of 26
(u/ldeve fo;_,of C.t>mrnerc,'u l fr-
APPENDIX. D TECH. DESIGN SUMMARY
As Revised ..
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.15)
Design Parameters (continu ed)
Hydrology (continued)
In making determinations for time of concentration, was segment analysis used?
No VYes In approximately what percent of Design Drain age Areas? [DO %
As to intensity-duration-frequency and rain depth criteria for dete0ing runoff flows , were any
criteria other than those provided in these Guidelines used? __ No __ Yes If "yes"
identify type of data, source(s), and where applied:
For each of the stormwater management features listed below identify the storm return
frequencies (year) analyzed (or checked), and that used as the basis for design.
Feature Analysis Year(s) Design Year
Storm drain system for arterial and collector streets
Storm drain system for local streets JO 1ao I 6
Open channels
Swale/buried conduit combination in lieu of channel
Swales
Roadside ditches and culverts serving them
Detention facilities: spillway crest and its outfall
Detention facilities: outlet and conveyance structure(s)
Detention facilities: volume when outlet plugged
Culverts serving private drives or streets
Culverts serving public roadways
Bridges: provide in bridge report.
Hydraulics
What is the range of design flow velocities as outlined below?
Design flow velocities; Gutters Condu it Culverts Swales Channels
Highest (feet per second) 2 .30
Lowest (feet per second) / .. $3b
Streets and Storm Drain Systems Provide the summary information outlined below:
Roughness coefficients used For street gutters
For conduit ty pe(s) ., 0/ 2 -1-1 tJ IE
STORMWATER DESIGN GUIDELINES
Effective Februriry 2007
Page 24 of 26
()_018
Coefficients:
APPENDIX D TECH. DESIGN SUMMARY
/\s Revisecl ...
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.16)
Design Parameters (continued)
Hydraulics (continued)
Street and Storm Drain Systems (conti nued)
For the following, are assumptions other than allowable per Guidelines?
Inlet coefficients? ~No Yes Head and friction losses VNo --Yes --
Explain any "yes" answer:
In conduit is velocity generally increased in the downstream direction? --Yes v/No
Are elevation drops provided at inlets, manholes, and jun~tion boxes? ____k:::''(es __ No
Explain ry "no" answers: Lt;tr·3('r tres_, dowrJs -f.r_, .. ,.,., ,,,//ow "/.:or s f·,,:-•./I',~ v,e,!0(1 1e s1: !J),~c b1 4Hv 1Yl1~1 f'f'"s ~,1A 2~~ /~5;. c"/'"'~' /7 1;,.
/8 <:f. -:1..'t ~I C0'7'JjJ..tfti/IP'),: qre_ S.Cp(.1./,-c,/ fr>d1Ctil,VJC, h15hu vl'loc
Are hydraulic grade lines calculated and shown for design storm? v-Yes --No
For 100-year flow conditions? _LYes --No Explain any "no" answers:
What tailwater conditions were assumed at outfall point(s) of the storm drain system? Identify
each location and expl ain:
/)e.fa clu.---a ss-v,,,..,-.""J LI/ fJ',I'~ Orile+ :1 -£'i-,·s·I,~ 42''@ (5s /!)
Ovrlef )._ -OJ°en o.Afa/f /o s,;,P ri n] Creek -no for 1 / ;.v,)-e r
Open Channels If a HEC analysis is utilized , does it fo llow Sec Vl.F.5.a? __ Yes __ No
Outside of straight sections, is flow regime within limits of sub-critical flow? __ Yes __ No
If "no" list locations and explai n:
Culverts If plan sheets do not provide the following for each culvert, describe it here.
For each design discharge, will operation be outlet (barrel) control or inlet control? -· · f I !! · · ~ /-Jt f/,e + . .J..11/e:f Cvt'J ro -'f'J?5 are S""•Zt°. o Corr'f c-, u._,"' er
:!J 'l
)."{
~ fhcr/--d e 1 ~ lef wdl lef 1n,
Entrance, friction and exit losses : fl) IL -(?CJ C.v lvt>.-f '
& +,· ' lo Sc-" -cAev~7"1../l~d U'51Y>_. /7? ~rJ Fl ~J.... 1"'>° Fo ~./. :,
\._; I
I i e ":S;O 4re
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDE LINES
Effective Febrn ary 2007
Page 25 of 26
I
/ ... ~
APPENDIX. D TECH. DESIGN SUMMARY
As Revised
/,>5_
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.17)
Design Parameters (continued)
Computer Software
What computer software has been used in the analysis and assessment of stormwater
management needs and/or the development of facility designs proposed for subject property
project? List them below, being sure to identify the software name and version, the date of the
version, any applicable patches and the publisher
5-for/?'] C/1-/J V. 4.1 b1 1-/~es fa) /7Je lh oJs
Ex eel S/r<°o d 6Aeet s
Part 5 -Plans and Specifications
Requirements for submittal of construction drawings and specifications do not differ due to use of a
Technical Design Summary Report. See Section Ill, Paragraph C3.
Part 6 -Conclusions and Attestation
Conclusions
Add any concluding information here:
Attestation
Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical
Desi n Summar Draina e Re art b si nin and sealin below.
''This report {plan) for the drainage design of the development named in Part B was prepared
by me (or under my supervision) in accordance with provisions of the Bryan/College Station
Unified Drainage Design Guidelines for the owners of the property. All licenses and permits
required by any d all state and federal re gulatory agencies for the pro osed drainage
improvements have een issued or fall under applicable general permi·b ~~-~
'":1-<-~~~r~
State of Texas PE No. 9/(SO 3
STORMWATER DESIGN GUIDELIN ES
Effecti ve Feb1uary 2007
Page 26 of 26
*····*····*:~ .;-:: ............ :~?".
APPENDIX. D TECH. DESIGN SUMMARY
APPENDIX A
Drainage Area Data & Calculations
Spring Creek Gardens
Phase 3
Drainage Area Summary
Area
Area II (acres)
A, A,
Pre Development
101 6.34
102 1.50
103 2.16
Post Development
201 0.35
202 0.32
203 0.70
204 1.33
204A 0.52
2048 0.81
205 0.28
205A 0.08
2058 0.19
206 1.39
206A 0.75
2068 0.73
207 1.34
208 1.33
209 1.90
210 1.00
The Rational Method:
Q =CIA
Q = Flow (cfs)
A= Area (acres)
C = Runoff Coeff.
I = Rainfall Intensity (in/hr)
Brazos County:
Aror
6.34
1.50
2.16
0.35
0.32
0.70
1.33
0.52
0.81
0.28
0.08
0.19
1.39
0.75
0.73
1.34
1.33
1.90
1.00
5 year storm 10 year storm
b = 76 b = 80
d = 8.5 d = 8.5
e = 0.785 e = 0.763
5 year storm c, c, Cror tc Is Os
(min) (in/hr) (cfs)
0.35 0 0.35 19.2 5.604 12.43
0.35 0 0.35 19.2 5.604 2.94
0 0.80 0.80 10 7.693 13 29
0.60 0 0.60 10 7.693 1.62
0.60 0 0.60 10 7.693 1.48
0.60 0 0.60 11 .2 7.322 3.08
0.60 0 0.60 16.5 6.073 4.85
0.60 0 0.60 14.5 6.484 2.02
0.60 0 0.60 16.5 6.073 2.95
0.60 0 0.60 10 7.693 1.29
0.60 0 0.60 10 7.693 0.37
0.60 0 0.60 10 7.693 0.88
0.60 0 0.60 12.4 6.990 5.83
0.60 0 0.60 12.4 6.990 3.15
0.60 0 0.60 10 7.693 3.37
0.60 0 0.60 10 7.693 6.19
0.50 0 0.50 15.0 6.376 4.24
0 0.80 0.80 10 7.693 11 .69
0.60 0 0.60 16.2 6.131 3.68
I = b I (lc+d)e
le= Time of concentration (min)
25 year storm 50 year storm
b = 89 b = 98
d = 8.5 d = 8.5
e = 0.754 e = 0.745
10 year storm 25 year storm
I 10
(in/hr)
6 346
6.346
8.635
8.635
8.635
8.230
6.862
7.313
6.862
8.635
8.635
8.635
7.867
7.867
8.635
8.635
7.194
8.635
6.926
U10 l2s
(cfs) (in/hr)
14.08 7.274
3.33 7.274
14.92 9.861
1.81 9.861
1.66 9.86 1
3.46 9.405
5.48 7.859
2.28 8.368
3.34 7.859
1.45 9.861
0.41 9.861
0.98 9.861
6.56 8.995
3.54 8.995
3.78 9.861
6.94 9.861
4.78 8.234
13.12 9.861
4.16 7.930
tc = L/(V*60)
L = Length (ft
U2s
(cfs)
16.14
3.82
17.04
2.07
1.89
3.95
6.27
2.61
3.82
1.66
0.47
1.12
7.50
4.05
4.32
7.93
5.48
14.99
4.76
V =Velocity (fUsec)
100 year storm
b = 96
d = 8.0
e = 0.730
50 year storm 100 year storm
lso Uso 1100 0100
(in/hr) (cfs) (in/hr) (cfs)
8.252 18.31 8.611 19.11
8.252 4.33 8.611 4.52
11.148 19.26 11 .639 20.11
11.148 2.34 11.639 2.44
11.148 2.14 11 .639 2.23
10.638 4.47 11 .104 4.66
8.908 7.11 9.294 7.42
9.478 2.96 9.890 3.09
8.908 4.33 9.294 4.52
11.148 1.87 11 .639 1.96
11.148 0.54 11 .639 0.56
11.148 1.27 11 .639 1.33
10.179 8.49 10.623 8.86
10.179 4.58 10.623 4.78
11.148 4.88 11 .639 5.10
11.148 8.96 11 .639 9.36
9.328 6.20 9.732 6.47
11 .148 16.94 11.639 17.69
8.988 5.39 9.377 5.63
APPENDIXB
Gutter Depth Check Calculations & Exhibit
(Exhibit A)
Spring Creek Gardens
Phase 3
Depth of Flow in Gutter
(Refer to Exhibit A for Gutter Locations)
Gutter A
Location Area# (acres)
A1 204A, bypass from A5 0.52
A2 2048 0.81
A3 205A 0.08
A4 2058 0.19
A5 210 1.00
81 203 0.70
82 2068 0.73 -83 206A, bypass from 81 0.75 -
Transverse (Crown) slope (fUft)
27' street= 0.0300
c Slope le
(tuft) (min)
0.6 0.0080 14.5
0.6 0.0080 16.5
0.6 0.0080 10.0
0.6 0.0080 10.0 - -
0.6 0.0080 16.2 --
0.6 0.0130 11.2 -
0.6 0.0100 10.0
0.6 0.0100 12.4
Straight Crown Flow (Solved to find actual depth of flow in gutter, y):
Q = 0.56 • (z/n) • S112 • y8'3 ¢ y ={QI (0.56 • (z/n) • S112]}318
n = Roughness Coefficient= 0.018
S = StreeUGutter Slope (fl/ft)
y = Depth of flow at inlet (ft)
z = Reciprocal of crown slope:
27' street = 33
10-year storm 100-year storm
110 010 Y10-actual 1100 0 100 Y100
(in/hr) (cfs) (ft) (in) (in/hr) (cfs) (ft) (in)
7.313 3.41 0.290 3.48 9.890 5.50 0.347 4.16
6.862 3.34 0.287 3.45 9.294 4.52 0.322 3.86
8.635 0.41 0.131 1.58 11.639 0.56 0.147 1.76
8.635 0.98 0.182 2.18 11 .639 1.33 0.203 2.44 -
6.926 4.16 0.312 3.74 9.377 5.63 0.350 4.20
8.230 3.46 0.266 3.19 11 .104 4.66 0.297 3.57
8.635 3.78 0.289 3.47 11 .639 5.10 0.323 3.88
-
7.867 3.54 0.282 3.38 10.623 4.78 0.315 3.78
Label
Ex 42
P-1
P-2
P-'.l
0_4
P-5
P-i_i
Label
Fv 42
p_;
P-2
P-~5
P-J
P-5
P-6
P-7
US Node DS Node
J-1 0-1
1-1 J-1
1-2 1-1
1-3 1-2
1-4 1-3
1-5 1-4
1-6 1-5
1-7 0-2
US Node DS Node
J-1
1-1
1-2
1-3
1-4
1-5
1-6
1-7
0 -1
J-1
1-1
1-2
1-3
1-4
1-5
0 -2
Length
ft
23.00
71 .00
105.60
207.20
151 .50
100.30
30.50
123.00
Length
ft
23
71
105.6
207.2
151 .5
100.3
30.5
# of !
Pipes Dia.
in
1.00 ' 42 inch
1.00 30 inch
1.00 30 inch
1.00 I 24 (-25%)
1.00 I 24 (-25%)
1.00 124 (-25%)
1.00 i 18 (-25%)
1.00 '24 (-25%)
SPRING CREEK GARDENS, PHASE 3
PIPE ANALYSIS
10 yr Design Storm
I
US Invert I DS Invert Slope I Mannings I Computed! Design I
Elev. Elev. n Q Capacity
ft
269.27
270.7
271.43
273.17
274.18
274.88
275.69
269 .91
ft
269 .2
270.3
270.8
271 .9
273.3
274.3
275.4
268.9
ft/ft
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.013
0.012
0.012
0.012
0.012
0.012
0.01 2
0.012
100 yr Design Storm
cfs
24.71
24.86
13.74
12.54
10.70
9.11
1.41
7.04
cfs
55 .50
34 .58
34.32
12.92
12.94
12.92
7.82
14 .98
us
Ground
Elev.
ft
280.50 I
278.00
278.00
278.60
280.35
279.51
279.51 i
273.40
HGL In
ft
272.6
272.7
272.7
274.6
275.4
276.0
276.2
270.9
[ US Inve rt I DS Invert I I Mannings Computed I Design I US HGL In
Dia. Elev.
1
Elev. Slope n Q Capacity I Ground '
# of
Pipes , , Elev. -· --in I ft I ft ft/ft cts cts ft
42 inch 1 269.27 I 269.20 0.0030 ' 0.013 33.4 55.5 280.50
30 inch I 270.70 1 270.27 0.0061 0.012 33.5 34.6 278.00
30 inch 271.43 270.80 0.0060 0.012 18.4 34.3 278.00
I 24 (-25%) 273.17 271.93 0.0060 0.012 16.7 12.9 278.60
24 (-25%) 274.18 273.27 0.0060 0.012 14.5 12.9 280.35
24 (-25%) 274.88 274.28 0.0060 0.012 12.6 12.9 279.51
18 (-25%) 275.69 275.38 0.0102 0.012 1.9 7.8 279.51
ft
272.62
272 .90
272.88
275 .61
276.75
277.32
277 .34
123 . 24 (-25%) 269 .91 268.92 0.0080 0.012 9.5 15.o 273.40 I 271.06
I I
~la te: The analysis shown above was prepared using StormCAD 4. 'by Haestad Methods. The output is a summary report produced by the software.
Page 1 of 1
DS
Ground
Elev.
ft
280.5
280.5
278
278
278.6
280.35
279.51
273
DS
HGL Out
ft
272.6
272.6 1
272.69
273.25
274.55
275.35
276.01
269.76
Ground HGL Out
Elev.--'--_
ft ft
280.50 272.60
280.50 272.62
278.00 272.90
278.00 273.43
278.60 275.61
280.35 276.75
279.51 277.32
273.00 269.92
Vel. Out
ft/s
2.59
5.2
3.45
6.49
5.75
5.94
2.23
6.26
Vel. Out
ft/s
3.5
7.0
4.2
7.7
6.2
5.4
1.4
6.7
APPENDIXD
Storm Sewer Design and Post-Development Drainage Area Map
(Exhibit B)
APPENDIXE
Pre-Development Drainage Area Map
(Exhibit C)